How about just use the one with the proper psi and gph rating in the first place

Well, that 40252 Facet has been pretty darn hard to find available, for starters, and costs more. 40171 plus regulator has been promoted, readily available and pretty cheap, so people buy them. And if you're not doing a lot of prolonged slow technical & whoops riding, you may never experience the flooding symptoms in the first place. So, yeah, duh.